HI here!
I'm configuring OSPF on my s6720 switch. It works, but it looks strange. I just turned OSPF on the interface, like this:
ospf 1 router-id 10.8.0.100
silent-interface all
undo silent-interface Vlanif4010
area 0.0.0.0
network 10.8.3.0 0.0.0.255
interface Vlanif4010
ip address 10.8.3.18 255.255.255.0
ospf cost 100
ospf network-type p2mp
ospf dr-priority 0
mpls
mpls ldp
As you can see, all the neigbours have addresses in 10.8.3.0/24 network.
Then it started to discover the neighbours, and exchanged the routing info. Finally I checked my RIB and found a lot of prefixes like this: 10.8.3.XX/32
Why the OSPF process generates /32 for directly connected interface. It isn't a Loopback interface, just usual vlan with broadcast network there.
I tried to change network type, but it didn't change the behaviour. Probaly it could be connected with MPLS on the interface, who knows?
Any way, could you give me a hint how i could change this behaviour? I applied a prefix list to filter these prefixes, but I don't think this is a good resolution of the problem.